A series of benzo[b]carbazole and cyclohepta[b]indole derivatives were afforded in a 77% average yield with excellent regioselectivities enabled by Au(i)/Sc(iii) bimetallic relay catalysis.

The unexpected gold‐catalyzed formal [3+2]‐cycloaddition of N‐2,2,2‐trifluoroethylisatin ketimines with 2‐(1‐Alkynyl)‐2‐alken‐1‐ones is reported. Both diastereomers of the corresponding cycloadducts were formed in moderate to excellent yields with excellent diastereoselectivities by switching the catalytic system from mono‐gold to gold/silver bimetallic catalytic system. The practicality of this protocol is demonstrated by scale‐up reaction and the transformations of the cycloadduct.

A mechanochemical direct selenocyanation of arenes/heterocyclic arenes with electrophilic selenocyanating reagents to access (hetero)aryl selenocyanates has been developed. This protocol provided an efficient strategy to access various aromatic selenocyanates in yields up to 99 % under ball‐milling reaction conditions within 60 minutes. Gram‐scale reaction and further transformations of the product were conducted to demonstrate the synthetic utilities of this method.

A gold-catalyzed tandem cycloisomerization/ring expansion of alkynyl spiro-epoxyoxindoles was developed, affording furo[2,3-c]quinolinones in good to excellent yields with broad substrates scope. This methodology provides an efficient approach to construct furo[2,3-c]quinolinone moieties. Moreover, the fluorescence properties of furo [2,3-c] quinolinones are also investigated.